I guess what I’m wondering is how much is enough for the average soldier or police officer to be successful? It takes many years to become a black belt in jiu jitsu and in that time, guys could have violent encounters. So how do you train someone to a high enough level fast enough to be as effective as possible as quickly as needed? Asking for myself. I want to train for law enforcement purposes, but my time is limited and I may not have 10 years to learn it all before something bad happens.